OKI
ML2502
1.2
(1)
(2)
(3)
(4)
Phrase 1 Playback Operation
Input a “H” pulse to the PLAY1 pin to power up and start playback from the top address of the
memory.
The LSI automatically ends playback when the last address of the recorded phrase has been
reached.
The LSI automatically shifts to low-power consumption mode after playback ends.
To stop playback of phrase 1 before reaching the last address, input a “H” pulse again to
the PLAY1 or PLAY2 pin. This will cause the LSI to stop playback and then automatically
shift to low-power consumption mode.
During playback operation signal input to the PLAY1 or PLAY2 pin only is valid, any other
signal input is disregarded
Start Pulse
Stop Pulse
(5)
PLAY1
PLAY2
MON
Status
Power Down
Powering Up
Playing Back
Powering Down
Power Down
Figure 1.2 Timing Chart for Phrase 1 Playback Operation
1.3
(1)
Phrase 1 Erasing Operation
While inputting “H” level to the ERASE pin, input a “H” pulse to the REC1 pin to start erasing
Phrase 1.
(2)
After Phrase 1 having been erased, the LSI automatically shifts to power-down mode for
low-power consumption.
Note: Erasing operation cannot be abandoned in the middle once getting started.
Internally, the LSI performs erasing Phrase 1 by recording “Silence” from the top address
to address 250. Therefore, if you attempt to playback the erased phrase, the playback
starts at the top address of the memory and ends at address 250.
Start Pulse
ERASE
REC1
MON
Status
Power Down
Powering Up
Erasing
Powering Down
Power Down
Figure 1.3 Timing Chart for Phrase 1 Erasing Operation
ML2502 Data Sheet (Revision 8.0)
5
OKI [ OKI ELECTRONIC COMPONETS ]
